<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8" />
    <meta http-equiv="X-UA-Compatible" content="IE=edge" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <title>Document</title>
  </head>
  <body>
    <script src="https://cdn.jsdelivr.net/npm/axios/dist/axios.min.js"></script>
    <script>
      //   try {
      //     console.log(msg)
      //   } catch (err) {
      //     console.log(err)
      //   }
      //   console.log('44')

      // try-catch 让我们的js代码更加健壮，不会影响后续代码的执行
      async function xxx() {
        try {
          const res = await axios({
            url: 'http://ajax-api.itheima.net/api/books/999',
          })
          console.log(res)
        } catch (err) {
          console.log('err333', err)
        }
        console.log(666)
      }
      xxx()
    </script>
  </body>
</html>
